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EMS vocoder 2000

EMS Vocoder 2000

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Info EMS Vocoders Sheet

The EMS-VOCODER 2000 is a compact, low cost, simple to use and
versatile speech synthesizer.
Its main purpose is to impose the articulation of a voice onto another
sound, thereby making
it speak or sing. Such sounds (excitations) can be derived from any
audio source. For instance:
MUSICAL SOUNDS from an organ, guitar or symphony orchestra; UNMUSICAL
SOUNDS such as the roar
of an aeroplane1 the snarl of a lion, the clatter of a typewriter and
SYNTHETIC SOUNDS such as
a synthesizer or the Vocoders own voltage controlled oscillator or noise
generator.
In each case the sounds are made to talk or sing or resonate with the
intonation expression
and meaning of an input voice, which may be derived live from a
microphone or from a live
recording.

Various parts of the electronic circuitry of the EMS-VOCODER 2000
detect the fundamental
pitch of the voice input whether a sybillant or vowel is being spoken.
32 filters analyse and
resynthesize the frequency and amplitude pattern of the speech input.
With this information
the original voice may be recreated using the Vocoders own internal
oscillator as a sound
source. A wide range of subtle or coarse changes are easily achieved.
For instance, the pitch
of a voice may be raised or lowered, or a word or sentence may be frozen
or slurred.
In the case of musical excitation, sources such as organ, guitar, voice
or even a recording
of an orchestra are filtered at the correct rate and frequencies so as
to impose on them the
characteristics of the voice input.

It is clear, therefore, that a new degree of freedom is given to the
electronic synthesizer.
No longer are the sounds limited by monotonous oscillators and a few
filters: now interesting
and rich effects can be derived from standard musical instruments and
normal voice performance.
In this way, musicians who are not expert in synthesizers can produce
the newest effects with
the minimum of electronic technique by relying mainly on their own
musical expertise.
The EMS-VOCODER 2000 is the baby sister of the much more complex
EMS-VOCODER. Both were
designed by Tim Orr and are the result of years of speech research at
EMS' computer music
and speech studio.